在气垫导轨上研究了变质量物体在变力作用下的运动规律。
The motion of variable mass system under variable force is studied using air track.
下面我们举两个关于物体在变力作用下运动的例子来结束这一节。
We conclude this section with two examples of motion under the action of a variable force.
而负性变力作用剂与急性前负荷增加均使ED _ (SL)上升。
Both negative inotropic agent and rise of preload caused the increase of EDSL.
利用CBL技术在变力作用下验证了动量定理，并介绍了实验原理及实验步骤。
Using CBL technique, the theorem of momentum with changing force is tested. The experimental principle and procedure are introduced.
结论在心肌肥厚大鼠心脏上，和在正常大鼠心脏上一样，MCI 15 4主要通过钙增敏作用发挥其正性变力作用。
CONCLUSION MCI-154 exerted positive inotropic effect concentration dependently via calcium sensitizing on hypertrophied rat heart as on normal rat heart.
由此可见，太阳光是太阳由于受到多个变力作用而形成的以电磁波(物质波)为媒介，始终传递着巨大能量的机械波。
Sunlight, therefore, is a mechanical wave created by many variable forces propagating huge energy through an electromagnetic wave medium.
目的探讨不同交变应力作用下，大鼠翼外肌成肌细胞增殖活性的变化，为交变应力下翼外肌组织的改建提供必要的基础实验数据。
Objective To investigate the effects of time varied stress on the proliferation of myoblast in rats and provide the basic experimental data for the remodeling of tissue in functional orthopaedics.
对具有中心裂纹或半无限长裂纹的无限大板在集中力作用下得到了精确的复变应力函数。
The exact complex stress functions are obtained for a infinite plate with a centrical crack or semi-infinite crack under concentrated forces at a certain point.
应用流式细胞术分析烟草细胞在交变应力作用下细胞周期的变化。
Flow cytometry was used to measure cell cycle parameters in tobacco cell suspensions acted by alternative stress.
研究了不同成份的铝镁合金在中温和不同应力作用下的动态应变时效，并阐述了动态应变时效在循环蠕变中的作用。
The application of dynamic strain ageing during cycling creep of Al-Mn alloys , consisting of various compositions, is studied at the middle temperature in this paper.
本文利用积分变换方法求解皮肤层在表面压力作用下的蠕变响应问题。
The creep of a skin layer under a distributed surface pressure was solved by an analytical method using Hankel transform and Laplace transform.
本文通过试验研究与计算分析，提出了在变轴力作用下钢筋砼受弯截面的强度与曲率变化的一般规律。
In this paper, the effect of changing axial load on the behaviour of reinforced concrete flexural section is described with the results given by beam tests and computer-based analysis.
对成层土中变阻抗(变模量或变截面)桩在任意激振力作用下的纵向振动特性进行了研究。
Longitudinal vibration of pile with variable impedance (variable sections or modulus) in layered soil undergoing arbitrary load is theoretically investigated.
由于重力作用在竖直于机组轴线方向上的压力分布不均匀，叶片上作用有交变应力。
The pressure distribution along the vertical direction is asymmetrical and cyclic stress acting on blades is found.
盐岩在应力作用下发生蠕变导致井眼闭合，常引起钻具卡钻事故。
Salt rock can make borehole close in the effect of creep, which often leads to stuck.
在变形加工过程中，由于加载、减载、模具承受交变应力作用，这就将引起开裂并发生重大破坏。
The dies are subject to alternating stresses due to loading and unloading during the deformation process and this causes crack initiation and eventual failure.
目的探讨不同交变应力作用下，大鼠翼外肌成肌细胞增殖活性的变化，为交变应力下翼外肌组织的改建提供必要的基础实验数据。
Objective To investigate the effects of time varied stress on the shape-alteration of myoblast in rats and to provide a theoretic base to determine the mechanics of myoblast in orthodontic therapy.
目的探讨不同交变应力作用下，大鼠翼外肌成肌细胞增殖活性的变化，为交变应力下翼外肌组织的改建提供必要的基础实验数据。
Objective To investigate the effects of time varied stress on the shape-alteration of myoblast in rats and to provide a theoretic base to determine the mechanics of myoblast in orthodontic therapy.
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